Naruto's upbeat and positive personality would be a huge change. He's always been able to make friends easily, and in Hogwarts, he'd probably have a much wider circle of friends from different houses right from the start. This could lead to a more united Hogwarts against Voldemort. His never - give - up attitude would also be a big factor. When facing challenges like the Triwizard Tournament or dealing with Voldemort's threats, he wouldn't be as easily daunted as Harry was at times.
Naruto has a big heart and a strong sense of justice. In the story, this would translate to him being more proactive in fighting against the injustices in the wizarding world. He might not wait for the Ministry of Magic to act on issues like the treatment of house - elves or the discrimination between pure - bloods and half - bloods. His personality also means he's not afraid to speak his mind. So, when dealing with the likes of Snape or other difficult characters, he would be more straightforward and might even be able to break through some of their barriers more quickly than Harry did.
His personality might become more carefree like Luffy's. He would probably be more laid - back and not worry as much about formalities.
He might become more outgoing. In the Naruto world, the culture is different from the rather formal and often secluded wizarding world. Harry would be exposed to a more boisterous and open - minded society, so he could become more extroverted and less reserved.
If Naruto becomes involved with Slenderman in a fanfiction, his usually cheerful and determined personality might become darker. He could be more withdrawn as he grapples with the strange and often terrifying aspects of Slenderman's world.
His personality might become more refined. Instead of being the rowdy Naruto we know, he could be more composed and polite due to the influence of the daimyo's court.
He might become more serene. Since Sadaiam might have a calmer and more nature - centered philosophy, Naruto could adopt some of that. He'd be less impulsive in his actions and more contemplative.
Naruto might become more aggressive at first. The influence of Venom could bring out his darker side. But as he gets used to it, he would learn to balance it with his usual positive and determined self.
Naruto might become more calm and collected. Goku has a certain simplicity and focus in his personality. Naruto could pick up on that and not be as impulsive as he usually is.
Naruto might become more reserved. Growing up under Zeltrech, he could be exposed to a more sophisticated and perhaps less rowdy environment compared to Konoha. So instead of his usual loud and brash self, he could develop a more calm and calculated side.
His personality could also become more calculating. Since the Sannin were known for their strategic thinking, Naruto would start to think several steps ahead. He might be more secretive about his plans too. He would no longer be the open - book Naruto. Instead, he would be like Jiraiya, who had his own secrets and plans. He would also show more patience, which is something he lacked before but the Sannin had in abundance when dealing with complex situations.
Well, first of all, Naruto's usually carefree and positive personality could be tempered with Ace's more complex emotional side. Ace had a lot of baggage related to his family and his identity as a pirate. So Naruto might start to have some internal struggles about his place in the world. He could become more reserved in some ways, like not being as quick to share his feelings. At the same time, his loyalty would become even more intense. He would be willing to go to greater lengths for his friends and the village, almost to the point of self - sacrifice, which was a big part of Ace's character. And his view of power might change too. Instead of just seeing it as a means to protect and be recognized, he could see it as a way to uphold a certain code, like Ace's code among the pirates.